9149 has 4 divisors (see below), whose sum is σ = 10464. Its totient is φ = 7836.

The previous prime is 9137. The next prime is 9151. The reversal of 9149 is 9419.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9149 - 2⁴ = 9133 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 9149.

It is not an unprimeable number, because it can be changed into a prime (9109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647 + ... + 660.

It is an arithmetic number, because the mean of its divisors is an integer number (2616).

2⁹¹⁴⁹ is an apocalyptic number.

It is an amenable number.

9149 is a deficient number, since it is larger than the sum of its proper divisors (1315).

9149 is a wasteful number, since it uses less digits than its factorization.

9149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314.

The product of its digits is 324, while the sum is 23.

The square root of 9149 is about 95.6504051220. The cubic root of 9149 is about 20.9150003346.

The spelling of 9149 in words is "nine thousand, one hundred forty-nine".